Class X tolerance per ANSI/ASME B1.20.1. Manufactured from Tool Steel; 60/62 R (cold stabilized). Certificate of Accuracy included; NIST traceable. Package Dimensions: 8.89 L x 3.555H x0.762W(centimeters).
Through trial and error, I found that this gage consistently produced inaccurate readings .While the price may be attractive, the lack of precision makes it unusable for any serious dimensional measurement tasks..
This is a standard size gauge and was shipped earlier than expected. The sensor was adequately protected in packaging. We always recalibrate upon receipt and that wasn't a problem either.